402542053394 has 16 divisors (see below), whose sum is σ = 650435244480. Its totient is φ = 185738638800.

The previous prime is 402542053393. The next prime is 402542053519. The reversal of 402542053394 is 493350245204.

It is not an unprimeable number, because it can be changed into a prime (402542053393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984832 + ... + 2178219.

It is an arithmetic number, because the mean of its divisors is an integer number (40652202780).

Almost surely, 2^402542053394 is an apocalyptic number.

402542053394 is a deficient number, since it is larger than the sum of its proper divisors (247893191086).

402542053394 is a wasteful number, since it uses less digits than its factorization.

402542053394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166785.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 402542053394 its reverse (493350245204), we get a palindrome (895892298598).

The spelling of 402542053394 in words is "four hundred two billion, five hundred forty-two million, fifty-three thousand, three hundred ninety-four".